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                <h2 id="1-标签"><a href="#1-标签" class="headerlink" title="1.标签"></a>1.标签</h2><h3 id="1-1-abbr标签"><a href="#1-1-abbr标签" class="headerlink" title="1.1 abbr标签"></a>1.1 abbr标签</h3><p>abbr标签被用来设置缩写词或者缩略词，abbr上的title属性填写完整的信息。</p>
<p>作用：为浏览器，拼写检查，翻译系统，以及搜索引擎分度器提供有用的信息</p>
<h3 id="1-2-address标签"><a href="#1-2-address标签" class="headerlink" title="1.2  address标签"></a>1.2  address标签</h3><p>定义文档作者/所有者的联系信息</p>
<p>address标签位于body内，表示该文档的作者。</p>
<p>address标签位于article标签内，表示该文章的作者</p>
<p>address标签里面的内容以斜体的方式呈现，使用br换行，通常写在footer标签内</p>
<h3 id="1-3-aside标签"><a href="#1-3-aside标签" class="headerlink" title="1.3 aside标签"></a>1.3 aside标签</h3><p>aside标签定义article标签外的内容，用作文章的侧边栏</p>
<h3 id="1-4-audio标签"><a href="#1-4-audio标签" class="headerlink" title="1.4 audio标签"></a>1.4 audio标签</h3><p>定义音频，支持的3中文件格式：MP3，Wav, Ogg</p>
<table>
<thead>
<tr>
<th>属性</th>
<th>值</th>
<th>描述</th>
</tr>
</thead>
<tbody><tr>
<td>contrlos</td>
<td>contrlos</td>
<td>显示控件</td>
</tr>
<tr>
<td>autoplay</td>
<td>autoplay</td>
<td>音频就绪后立马播放</td>
</tr>
<tr>
<td>loop</td>
<td>loop</td>
<td>循环播放</td>
</tr>
<tr>
<td>muted</td>
<td>muted</td>
<td>静音输入音频</td>
</tr>
<tr>
<td>preload</td>
<td>auto/metadata/none</td>
<td>音频是否默认被加载以及如何加载</td>
</tr>
<tr>
<td>src</td>
<td>URL</td>
<td>音频地址</td>
</tr>
</tbody></table>
<h3 id="1-5-base标签"><a href="#1-5-base标签" class="headerlink" title="1.5 base标签"></a>1.5 base标签</h3><p>设置当前页面链接的默认的URL和默认的跳转方式</p>
<table>
<thead>
<tr>
<th>属性</th>
<th>值</th>
<th align="center">描述</th>
</tr>
</thead>
<tbody><tr>
<td>href</td>
<td>URl</td>
<td align="center">该页面所有链接的公共地址部分</td>
</tr>
<tr>
<td>target</td>
<td>_blank/ _parent/ _self/ _top/ _framename</td>
<td align="center">规定链接在何处打开，每个链接会被自身的target属性覆盖</td>
</tr>
</tbody></table>
<h3 id="1-6-bdi标签"><a href="#1-6-bdi标签" class="headerlink" title="1.6 bdi标签"></a>1.6 bdi标签</h3><p>双向隔离元素，会隔离以不同方向格式化的本文(脱离父元素的文本方向) 可以替换掉span标签</p>
<h3 id="1-7-bdo标签"><a href="#1-7-bdo标签" class="headerlink" title="1.7 bdo标签"></a>1.7 bdo标签</h3><p>用来设置标签内文本的方向，默认ltr(left to right)</p>
<p>bdo有一个属性：dir: lft(left to right) / rtl (right to left)从左边开始</p>
<h3 id="1-8-blockquote标签"><a href="#1-8-blockquote标签" class="headerlink" title="1.8 blockquote标签"></a>1.8 blockquote标签</h3><p>引用另一个源的快内容</p>
<p>属性：cite指定引用的地址</p>
<p>blockquote标签内用快标签包裹引用的内容，如果是一段很短的内容使用q标签</p>
<h3 id="1-9-canvas标签"><a href="#1-9-canvas标签" class="headerlink" title="1.9 canvas标签"></a>1.9 canvas标签</h3><p>画布容器，详情参考画布</p>
<h3 id="1-10-caption标签"><a href="#1-10-caption标签" class="headerlink" title="1.10 caption标签"></a>1.10 caption标签</h3><p>定义表格的标题，放到table标签的后面，默认会居中</p>
<p>可以通过css属性text-align 和 caption-side来设置标题的对齐方式和显示位置</p>
<h3 id="1-11-cite标签"><a href="#1-11-cite标签" class="headerlink" title="1.11 cite标签"></a>1.11 cite标签</h3><p>定义作品(节目，歌曲，书籍)的标题</p>
<h3 id="1-12-code标签"><a href="#1-12-code标签" class="headerlink" title="1.12 code标签"></a>1.12 code标签</h3><p>短语标签，定义计算机代码文本</p>
<h3 id="1-13-datalist标签"><a href="#1-13-datalist标签" class="headerlink" title="1.13 datalist标签"></a>1.13 datalist标签</h3><p>为input标签列出可能的值</p>
<p>使用input标签的list属性绑定datalist标签(id)，值使用option包裹</p>
<h3 id="1-14-details标签"><a href="#1-14-details标签" class="headerlink" title="1.14 details标签"></a>1.14 details标签</h3><p>设置details标签里面的内容是否对用户可见</p>
<p>默认不可见，添加open属性可见</p>
<h3 id="1-15-dfn标签"><a href="#1-15-dfn标签" class="headerlink" title="1.15 dfn标签"></a>1.15 dfn标签</h3><p>定义项目</p>
<h3 id="1-16-dialog标签"><a href="#1-16-dialog标签" class="headerlink" title="1.16 dialog标签"></a>1.16 dialog标签</h3><p>定义一个对话框，确认框或者窗口</p>
<p>open属性规定dialog标签是否生效</p>
<h3 id="1-17-fieldset标签"><a href="#1-17-fieldset标签" class="headerlink" title="1.17 fieldset标签"></a>1.17 fieldset标签</h3><p>对表单内的相关元素进行分组</p>
<p>legend标签为fieldset标签的标题</p>
<table>
<thead>
<tr>
<th>属性</th>
<th>值</th>
<th>描述</th>
</tr>
</thead>
<tbody><tr>
<td>disabled</td>
<td>disabled</td>
<td>规定这组表单相关元素禁用</td>
</tr>
<tr>
<td>from</td>
<td>from_id</td>
<td>规定该分组属于哪个、哪些表单</td>
</tr>
<tr>
<td>name</td>
<td>text</td>
<td>规定fieldset的名字</td>
</tr>
</tbody></table>
<h3 id="1-18-figure标签"><a href="#1-18-figure标签" class="headerlink" title="1.18 figure标签"></a>1.18 figure标签</h3><p>独立的流内容(图像，图片，照片，代码等)</p>
<p>figure标签内的内容应该与主体内容相关，同时元素的位置相当于主体内容是独立的，如果被删除则不应该对文档流产生影响</p>
<h3 id="1-19-figcaption标签"><a href="#1-19-figcaption标签" class="headerlink" title="1.19 figcaption标签"></a>1.19 figcaption标签</h3><p>figcaption标签为figure标签定义标题</p>
<p>figcaption应该被写在figure的第一个位置或最后一个位置</p>
<h3 id="1-20-hgroup标签"><a href="#1-20-hgroup标签" class="headerlink" title="1.20 hgroup标签"></a>1.20 hgroup标签</h3><p>hgroup标签被用来对有层级关系的标题进行分组</p>
<h3 id="1-21-iframe标签"><a href="#1-21-iframe标签" class="headerlink" title="1.21 iframe标签"></a>1.21 iframe标签</h3><p>定义一个内联框架，在当前文档中嵌入另一个文档</p>
<p>把需要的文本放置在iframe标签之间，应对不支持iframe标签的浏览器</p>
<table>
<thead>
<tr>
<th>属性</th>
<th>值</th>
<th>描述</th>
</tr>
</thead>
<tbody><tr>
<td>height</td>
<td>piels</td>
<td>设置iframe的高度</td>
</tr>
<tr>
<td>name</td>
<td>name</td>
<td>给iframe添加名字</td>
</tr>
<tr>
<td>sandbox</td>
<td></td>
<td>对iframe的内容定义一系列的额为限制</td>
</tr>
<tr>
<td>seamless</td>
<td>Boolean</td>
<td>使iframe看起来像包含在文档中的一部分</td>
</tr>
<tr>
<td>src</td>
<td>URL</td>
<td>需要显示文档的URL</td>
</tr>
<tr>
<td>srcdoc</td>
<td></td>
<td>在内联框中显示的HTML内容</td>
</tr>
</tbody></table>
<table>
<thead>
<tr>
<th>sandbox属性值</th>
<th>描述</th>
</tr>
</thead>
<tbody><tr>
<td>“”</td>
<td>启用所有限制条件</td>
</tr>
<tr>
<td>allow-same-origin</td>
<td>允许将内容作为普通来源对待</td>
</tr>
<tr>
<td>allow-top-navigation</td>
<td>嵌入的页面上下文可以导航</td>
</tr>
<tr>
<td>allow-forms</td>
<td>允许表单提交</td>
</tr>
<tr>
<td>allow-scripts</td>
<td>允许脚本执行</td>
</tr>
</tbody></table>
<h3 id="1-22-main标签"><a href="#1-22-main标签" class="headerlink" title="1.22 main标签"></a>1.22 main标签</h3><p>main标签用来指定文档的主体部分</p>
<p>main标签在一个文档中是唯一的，main标签不能是如：header,footer,article标签的后代</p>
<h3 id="1-23-map标签"><a href="#1-23-map标签" class="headerlink" title="1.23 map标签"></a>1.23 map标签</h3><p>用于客户端的图像映射(有可点击区域的一幅画)</p>
<p>img中须有添加usemap属性对应map中id或者name属性。</p>
<p>配合area标签使用，area标签永远嵌套于map元素内部。定义图像的映射区域。</p>
<h3 id="1-24-mark标签"><a href="#1-24-mark标签" class="headerlink" title="1.24 mark标签"></a>1.24 mark标签</h3><p>高亮突出显示文本</p>
<h3 id="1-25-meta标签"><a href="#1-25-meta标签" class="headerlink" title="1.25 meta标签"></a>1.25 meta标签</h3><p>提供HTML文档的元数据，不会显示在浏览器但会被解析</p>
<p>元数据：网页的描述，关键词，文件的最后修改时间，作者以及其他的元数据。</p>
<p>如果没有提供name属性，那么会采用http-equiv属性的值</p>
<p>实例：</p>
<ol>
<li><p>定义文档关键词，用于搜索引擎优化</p>
<meta name="keywords" content="HTML, css, XML, XHTML, JavaScript" <="" li="">
</li><li><p>定义网页描述</p>
<meta name="description" content="Free Web" <="" li="">
</li><li><p>定义页面作者</p>
<meta name="author" content="LanHuiYan">
</li>
<li><p>每30秒刷新页面</p>
<meta http-equiv="refresh" content="30">
</li>
<li><p>定义字符集</p>
<meta charset="utf-8">
</li>
<li><p>适应移动端</p>
<meta name="viewport" content="width=device-width, initial=scale=1.0, maximum-scale=1.0,user-scalable=0">

</li>
</ol>
<h3 id="1-25-meter标签"><a href="#1-25-meter标签" class="headerlink" title="1.25 meter标签"></a>1.25 meter标签</h3><p>用于已知最大和最小值的度量</p>
<p>用途：磁盘使用情况，查询结果的相关性等</p>
<p>不能当做进度条来使用</p>
<table>
<thead>
<tr>
<th>属性</th>
<th>值</th>
<th>描述</th>
</tr>
</thead>
<tbody><tr>
<td>form</td>
<td>form_id</td>
<td>规定meter标签所属一个或多个标签</td>
</tr>
<tr>
<td>high</td>
<td>number</td>
<td>规定被界定为高值的范围</td>
</tr>
<tr>
<td>low</td>
<td>number</td>
<td>规定被界定为低值的范围</td>
</tr>
<tr>
<td>max</td>
<td>number</td>
<td>规定范围的最高值</td>
</tr>
<tr>
<td>min</td>
<td>number</td>
<td>规定范围的最低值</td>
</tr>
<tr>
<td>optimum</td>
<td>number</td>
<td>规定度量的最优值</td>
</tr>
<tr>
<td>value</td>
<td>number</td>
<td>规定当前值</td>
</tr>
</tbody></table>
<h3 id="1-26-noscript-标签"><a href="#1-26-noscript-标签" class="headerlink" title="1.26 noscript 标签"></a>1.26 noscript 标签</h3><p>当脚本未被执行时的替换文本</p>
<h3 id="1-27-object标签"><a href="#1-27-object标签" class="headerlink" title="1.27 object标签"></a>1.27 object标签</h3><p>用于包含对象，比如：图像，音频，视频，Java，applets，PDF，Flash等</p>
<p>如果浏览器不支持object标签，则会执行object里面的代码(利用这点，嵌套object标签针对不同的浏览器)</p>
<table>
<thead>
<tr>
<th>属性</th>
<th>值</th>
<th>描述</th>
</tr>
</thead>
<tbody><tr>
<td>data</td>
<td>URL</td>
<td>对象的地址</td>
</tr>
<tr>
<td>form</td>
<td>form_id</td>
<td>规定对象所属的一个或多个表单</td>
</tr>
<tr>
<td>height</td>
<td>px</td>
<td>规定对象的高度</td>
</tr>
<tr>
<td>name</td>
<td>name</td>
<td>给对象起名字</td>
</tr>
<tr>
<td>usemap</td>
<td>#mapname</td>
<td>对对象使用图像映射</td>
</tr>
<tr>
<td>type</td>
<td>MIME_Type</td>
<td>data属性中的数据类型</td>
</tr>
<tr>
<td>width</td>
<td>px</td>
<td>对象的宽度</td>
</tr>
</tbody></table>
<h3 id="1-28-optgroup-标签"><a href="#1-28-optgroup-标签" class="headerlink" title="1.28 optgroup 标签"></a>1.28 optgroup 标签</h3><p>把相关联的<strong>选项</strong>组合到一起</p>
<p>把相关联的option放到optgroup中</p>
<p>disabled属性，规定禁用该组；label为选项组添加描述</p>
<h3 id="1-29-option标签"><a href="#1-29-option标签" class="headerlink" title="1.29 option标签"></a>1.29 option标签</h3><p>定义下拉列表(select) 或者 datalist中的一个元素</p>
<h3 id="1-30-output-标签"><a href="#1-30-output-标签" class="headerlink" title="1.30 output 标签"></a>1.30 output 标签</h3><p>作为计算结果输出显示(比如执行脚本的输出)</p>
<table>
<thead>
<tr>
<th>属性</th>
<th>值</th>
<th>描述</th>
</tr>
</thead>
<tbody><tr>
<td>for</td>
<td>element_id</td>
<td>描述计算中使用的元素与计算结果之间的关系</td>
</tr>
<tr>
<td>form</td>
<td>form_id</td>
<td>输入字段所属的一个或火哥表单</td>
</tr>
<tr>
<td>name</td>
<td>name</td>
<td>定义对象的唯一名称</td>
</tr>
</tbody></table>
<p>form标签里面的oninput事件可以为output的value属性赋值</p>
<h3 id="1-31-param标签"><a href="#1-31-param标签" class="headerlink" title="1.31 param标签"></a>1.31 param标签</h3><p>此标签可以为包含它的object或者applet提供参数</p>
<p>name属性：定义参数的名称；value描述参数值</p>
<h3 id="1-32-picture标签"><a href="#1-32-picture标签" class="headerlink" title="1.32 picture标签"></a>1.32 picture标签</h3><p>在不同的设备上显示不同的图片，一般用于响应式</p>
<p>在picture标签里面包含了一个或多个source标签，每个source标签匹配不同的设备并引用不同的图像源，如果没有匹配就使用source标签最后面的img标签</p>
<!--<picture> <source media="(min-width: 650px)" srcset="图片地址1">  <source media="(min-width: 465px)" srcset="图片地址2">  <img src="图片地址"> </picture>-->

<h3 id="1-33-progress标签"><a href="#1-33-progress标签" class="headerlink" title="1.33 progress标签"></a>1.33 progress标签</h3><p>进度，与JavaScript一起使用来显示任务的进度</p>
<p>度量衡使用meter</p>
<p>max属性：需要完成的进度值</p>
<p>value属性：当前进度值</p>
<h3 id="1-34-q标签"><a href="#1-34-q标签" class="headerlink" title="1.34 q标签"></a>1.34 q标签</h3><p>q标签定义一个短的引用</p>
<p>属性cite：引用源的地址</p>
<h3 id="1-35-rp标签"><a href="#1-35-rp标签" class="headerlink" title="1.35 rp标签"></a>1.35 rp标签</h3><p>rp标签是ruby标签中的注释标签，已定义不支持ruby元素的浏览器所显示的内容</p>
<h3 id="1-36-ruby标签"><a href="#1-36-ruby标签" class="headerlink" title="1.36 ruby标签"></a>1.36 ruby标签</h3><p>ruby标签由一个或多个需要注音的字符和提供该信息的rt标签和可选rp标签，定义当浏览器不支持ruby标签时的显示内容。</p>
<h3 id="1-37-rt标签"><a href="#1-37-rt标签" class="headerlink" title="1.37 rt标签"></a>1.37 rt标签</h3><p>定义字符的注音或解释</p>
<h3 id="1-38-samp标签"><a href="#1-38-samp标签" class="headerlink" title="1.38 samp标签"></a>1.38 samp标签</h3><p>定义计算机的样本文本</p>
<h3 id="1-39-small标签"><a href="#1-39-small标签" class="headerlink" title="1.39 small标签"></a>1.39 small标签</h3><p>small标签定义小型文本或旁注</p>
<h3 id="1-40-source标签"><a href="#1-40-source标签" class="headerlink" title="1.40 source标签"></a>1.40 source标签</h3><p>媒体标签定义媒体资源（audio, video,picture)</p>
<p>src属性：媒体文件的URL</p>
<p>media属性：规定媒体资源的类型，供浏览器决定是否下载</p>
<p>type属性：媒体资源的MIME类型</p>
<h3 id="1-50-sub下标标签"><a href="#1-50-sub下标标签" class="headerlink" title="1.50 sub下标标签"></a>1.50 sub下标标签</h3><p>下标标签</p>
<h3 id="1-51-summary-标签"><a href="#1-51-summary-标签" class="headerlink" title="1.51 summary 标签"></a>1.51 summary 标签</h3><p>给details标签设置一个可见的标题，当点击标题时显示详细信息</p>
<h2 id="2-HTML5全局属性"><a href="#2-HTML5全局属性" class="headerlink" title="2. HTML5全局属性"></a>2. HTML5全局属性</h2><h3 id="2-1-contenteditable"><a href="#2-1-contenteditable" class="headerlink" title="2.1 contenteditable"></a>2.1 contenteditable</h3><p>规定用户是否可以编辑内容</p>
<h3 id="2-2-accesskey"><a href="#2-2-accesskey" class="headerlink" title="2.2 accesskey"></a>2.2 accesskey</h3><p>规定元素的快捷键，可用来获取焦点或者激活元素</p>
<p>按住Alt + accesskey的值进行获取焦点</p>
<h3 id="2-3-dir"><a href="#2-3-dir" class="headerlink" title="2.3 dir"></a>2.3 dir</h3><p>规定元素内容的文本方向</p>
<h3 id="2-4-draggablea文本是否可拖动"><a href="#2-4-draggablea文本是否可拖动" class="headerlink" title="2.4 draggablea文本是否可拖动"></a>2.4 draggablea文本是否可拖动</h3><h3 id="2-5-lang"><a href="#2-5-lang" class="headerlink" title="2.5 lang"></a>2.5 lang</h3><p>规定元素内容的语言</p>
<h3 id="2-6-spellcheck"><a href="#2-6-spellcheck" class="headerlink" title="2.6 spellcheck"></a>2.6 spellcheck</h3><p>检测元素是否拼写错误</p>
<h2 id="3-canvas画布"><a href="#3-canvas画布" class="headerlink" title="3. canvas画布"></a>3. canvas画布</h2><p>canvas本身是不具有绘画功能的，需要使用js中的getContext(‘2d’)，返回一个具有绘画属性和方法的对象。</p>
<h3 id="3-1-颜色，样式，阴影"><a href="#3-1-颜色，样式，阴影" class="headerlink" title="3.1 颜色，样式，阴影"></a>3.1 颜色，样式，阴影</h3><h4 id="3-3-1属性"><a href="#3-3-1属性" class="headerlink" title="3.3.1属性"></a>3.3.1属性</h4><table>
<thead>
<tr>
<th>属性</th>
<th align="center">描述</th>
</tr>
</thead>
<tbody><tr>
<td>fillStyle</td>
<td align="center">设置或返回用于填充绘画的颜色，渐变，图片或模式(背景色)</td>
</tr>
<tr>
<td>strokeStyle</td>
<td align="center">设置或返回用于笔触的颜色，渐变，或模式(边框色)</td>
</tr>
<tr>
<td>shadowColor</td>
<td align="center">阴影颜色</td>
</tr>
<tr>
<td>shadowBlur</td>
<td align="center">模糊级别</td>
</tr>
<tr>
<td>shadowOffsetX</td>
<td align="center">阴影水平偏移量</td>
</tr>
<tr>
<td>shadowOffsetY</td>
<td align="center">阴影垂直偏移量</td>
</tr>
</tbody></table>
<h4 id="3-1-2方法"><a href="#3-1-2方法" class="headerlink" title="3.1.2方法"></a>3.1.2方法</h4><table>
<thead>
<tr>
<th>方法</th>
<th>描述</th>
</tr>
</thead>
<tbody><tr>
<td>createLinearGradient(x1,y1,x2,y2)</td>
<td>创建线性渐变</td>
</tr>
<tr>
<td>createPattern(image, “平铺方式”)</td>
<td>平铺</td>
</tr>
<tr>
<td>createRadialGradient(x1,y1,r1,x2,y2,r2)</td>
<td>创建放射性/圆形的渐变对象</td>
</tr>
<tr>
<td>addColorStop(stop, “color”)</td>
<td>设置渐变中的颜色和停止位置</td>
</tr>
</tbody></table>
<ul>
<li>x1, y1 渐变的起始位置，x2,y2渐变的结束位置， r1：起始圆的半径r2 ：结束圆的半径</li>
<li>都需要fillStyle, addColorStop()配合使用才有效果</li>
</ul>
<h3 id="3-2-线条样式"><a href="#3-2-线条样式" class="headerlink" title="3.2 线条样式"></a>3.2 线条样式</h3><table>
<thead>
<tr>
<th>属性</th>
<th align="center">描述</th>
</tr>
</thead>
<tbody><tr>
<td>lineCap</td>
<td align="center">线条末端的样式(butt平直 | round 圆形 | square正方形)</td>
</tr>
<tr>
<td>lineJoin</td>
<td align="center">线条相交样式(sevel|miter默认：尖角；round圆角)</td>
</tr>
<tr>
<td>lineWidth</td>
<td align="center">当前线条宽度</td>
</tr>
<tr>
<td>miterLimit</td>
<td align="center">最大斜接长度</td>
</tr>
</tbody></table>
<h3 id="3-3-矩形"><a href="#3-3-矩形" class="headerlink" title="3.3 矩形"></a>3.3 矩形</h3><table>
<thead>
<tr>
<th>方法</th>
<th>描述</th>
</tr>
</thead>
<tbody><tr>
<td>rect(x, y, width, height)</td>
<td>创建矩形</td>
</tr>
<tr>
<td>fillRect(x,y,width,height)</td>
<td>绘制被填充的矩形</td>
</tr>
<tr>
<td>strokeRect(x,y,width,height)</td>
<td>绘制空心矩形</td>
</tr>
<tr>
<td>clearRect(x,y,width,height)</td>
<td>清出一个矩形</td>
</tr>
</tbody></table>
<h3 id="3-4路径"><a href="#3-4路径" class="headerlink" title="3.4路径"></a>3.4路径</h3><table>
<thead>
<tr>
<th>方法</th>
<th>描述</th>
</tr>
</thead>
<tbody><tr>
<td>fill()</td>
<td>填充当前路径</td>
</tr>
<tr>
<td>stroke()</td>
<td>绘制已定义的路线</td>
</tr>
<tr>
<td>beginPath()</td>
<td>起始一条路径或重置当前路径</td>
</tr>
<tr>
<td>moveTo(x,y)</td>
<td>线条起始位置</td>
</tr>
<tr>
<td>lineTo(x,y)</td>
<td>线条结束位置</td>
</tr>
<tr>
<td>closePath()</td>
<td>连接起始位置和最后位置</td>
</tr>
<tr>
<td>clip()</td>
<td>把上一个绘制的区域作为后面的使用区域</td>
</tr>
<tr>
<td>quadraticCurveTo(cpx, cpy, x终, y终)</td>
<td>创建二次贝塞尔曲线</td>
</tr>
<tr>
<td>bezierCurveTo(cpx1,cpy1,cpx2,cpy2,x,y)</td>
<td>创建三次贝塞尔曲线</td>
</tr>
<tr>
<td>arc(x0,y0, r, angle0, angle1,绘图反向)</td>
<td>创建圆弧</td>
</tr>
<tr>
<td>arcTo(x1,y1,x2,y2,r)</td>
<td>绘制两条线之间的弧度</td>
</tr>
<tr>
<td>isPointInPath(x,y) Boolean类型</td>
<td>测试当前坐标是否在路径区域内</td>
</tr>
</tbody></table>
<p>x0,y0表示圆形坐标，r表示圆的半径，angle0表示起始位置,angle1表示结束位置(<strong>以弧度计</strong>)如：2*Math.PI，绘图方向默认顺时针。</p>
<p>x1,y1两线延长相交的横纵坐标，x2,y2第二条切线上一点的横纵坐标。</p>
<h3 id="3-5-转换"><a href="#3-5-转换" class="headerlink" title="3.5 转换"></a>3.5 转换</h3><table>
<thead>
<tr>
<th>方法</th>
<th align="center">描述</th>
</tr>
</thead>
<tbody><tr>
<td>scale(x轴缩放倍数，y轴缩放倍数)</td>
<td align="center">缩放当前绘图及起始位置</td>
</tr>
<tr>
<td>rotate(angle*Math.PI/180)</td>
<td align="center">旋转绘图</td>
</tr>
<tr>
<td>translate(x,y)</td>
<td align="center">重新映射画布的位置为(x,y);</td>
</tr>
<tr>
<td></td>
<td align="center"></td>
</tr>
<tr>
<td></td>
<td align="center"></td>
</tr>
<tr>
<td></td>
<td align="center"></td>
</tr>
<tr>
<td></td>
<td align="center"></td>
</tr>
<tr>
<td></td>
<td align="center"></td>
</tr>
<tr>
<td></td>
<td align="center"></td>
</tr>
</tbody></table>
<ul>
<li>进行缩放的同时也会缩放起始位置。</li>
</ul>
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